JP2006001823A - Technique for re-solidification of waste glass - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for manufacturing a glass block by making use of a material of glass with transparency just at a time when waste glass has not yet a recycle market fully prepared and has been studied on the various practical uses. <P>SOLUTION: The waste glass is crushed into a moderate particle size and then is mixed or coated with a plastic glass material which is sintered at a temperature somewhat lower than a softening point of glass but which is of high consistency at the hot condition and thereafter is molded in a box or plate shape and then fired, giving a glass solidified body for use in wall decorations, pavements or the like. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

Detailed Description of the Invention

The present invention belongs to a technical field in which waste glass and clinker are effectively used.

  Waste glass includes waste bottles and industrial waste glass. Of these, the recovery bins that are crushed and the clear, green, and brown bins are reused as cullet raw materials, while other miscellaneous color bins are used as substitutes for sand in concrete, but other industrial waste glass and clinker At the same time, it is discarded in large quantities without a takeover.

Problems to be solved by the present invention

Today, it is said that there are 1,100,000 tons of waste glass that is discharged and crushed in Japan alone per year. Of these, how to dispose of miscellaneous waste bins and high-temperature clinker in incinerators is accumulated. It has become a headache for field personnel or processors.
Among the glass scraps, so-called industrial / medical waste glass is a troublesome thing that cannot be taken over due to the possibility of pollution due to the resin film / coating agent contained therein or the residual medical drug adhering thereto. An object of the present invention is to search for an effective utilization method of the recycled waste glass.

Means for solving the problem

In order to solve the problems of the present invention, waste glass from which stoppers, labels, resin film environmental contamination and the like are predicted to be removed as much as possible is crushed or pulverized to an appropriate particle size. In addition to providing plasticity to make it easy to mold, it has various functions such as maintaining high hot consistency, so it can be used as clay for general refractory bricks. Add the ingredients.
Next, by a manufacturing method similar to that for general ceramic building materials, moisture adjustment, mixing / kneading, molding and firing are performed to obtain a glass solid body such as a glass block for wall surface decoration or a paving block.

The firing temperature of the filler that connects the aggregates, which is an important technical point of the present invention, and the firing temperature of the molded product will be described with reference to examples.
1. An example of filler composition.
Aggregate; waste glass, clinker, etc. 53.5%
Plastic material: Kibushi clay, CMC, etc. 23.5%
Viscous material: silica sand, kaolin, etc. 16.5%
Melt material; colemanite, urexite, etc. 6.5%
2. Formulation example of unmolded product.
Aggregate: 71.0%
Filler; 29.0%
After adding 15% water to this formulation and kneading it with a wet pan mill to make it uniform overnight, the moisture is made uniform by pressing with a hydraulic press and drying. Alternatively, after coating the contact surfaces of the products, they are inserted into a firing furnace and sintered and solidified at a safe temperature of cullet melting temperature of 1,100 ° C. or lower, that is, 900 ° C. to 1,050 ° C.

The invention's effect

I. Recycling effect of waste glass.
1. Of the waste bins collected with the cooperation of the citizens, the miscellaneous color bins that have been discarded can be reused.
2. Waste glass containing contaminants such as rare metal oxides, resin films, or medical chemicals contained in lead crystal glass, red glass, car window glass, cathode ray tube glass, and medical-related products are completely coated with a filler. This prevents environmental recontamination.
3. If the amount of the viscous material of the present invention is increased, it becomes compositionally porcelain and a general floor tile can be manufactured at low cost. Further, if the soda feldspar is replaced with scrap glass, the firing temperature is lowered by alkalis contained in an amount of 200 to 250% more than that, and the fuel cost can be cut relatively.
4). By using the filler of the present invention, the clinker coming out of the metallurgical mine or the high-temperature incineration plant can be made into a solid product at low cost and can be used for improving the environment.
II. Cost reduction effect such as glass block.
1. Cost reduction of raw materials used.
Since waste glass is used, the cost can be significantly reduced compared to ordinary glass products.
2. The glass raw material is melted at a high temperature of 1,400 ° C. to 1,500 ° C. However, in the present invention, the melted fritted cullet is used, so the temperature can be lowered by about 450 ° C., and the fuel cost is greatly reduced. I can plan.
III. Other decorative aesthetic effects.
1. Even waste glass is usually color-coded such as clear white, green, brown, etc. at the time of collection, and it is beautifully mixed with various colors. Also, black and koval colored tobins can be easily selected and used.
2. In addition, the color tone obtained by mixing these single-color particles is also beautifully decorative, and various decoration senses can be created by various color tones and mixing techniques.
3. In addition, warm colors or pastel colors need only be added to the filler. Since the pigment is used only as a filler, it can be added at a lower cost than a normal glass block. Also, the low firing temperature means that the pigment is well colored and the amount used can be significantly cut compared to ordinary high-temperature melting glass products.
4). Since both the aggregate and the supplement are made of glass, the light transmission and reflection / refraction of the material is directly inherited by the glass block of the present invention. Incorporation of extraneous light becomes possible.
5. The porcelain substrate that has been finely pulverized with an increased amount of viscous material has a light gray on the miscellaneous waste glass used. In addition, clear, green, and brown can be obtained for white, pale yellow, ivory, and other beautiful porcelain floor tiles, and pigments for the base can be saved.

Example of glass block structure diagram of the present invention

Explanation of symbols

1 is a main body of the glass block, 2 is a cavity of the glass block, and 3 is a silica sand particle coating layer.

Claims (1)

1. Kibushi clay and paste to ensure plasticity during molding (hereinafter referred to as plastic material). When,
2. Silica sand, alumina, kaolin, etc. (hereinafter referred to as viscous material) for adjusting the viscosity during firing. When,
3. If necessary, fine powder is added by adding colemanite / uremanite or the like (hereinafter referred to as a “melting material”) that adjusts the meltability during firing.
The above-mentioned various materials (hereinafter referred to as fillers) are added alone, or crushed waste glass, or crushed or high-temperature incinerator clinker is added as an aggregate, and is appropriately added to dry mix or knead. This is pressed, vibrated, crushed, or wet extruded to obtain a molded product.
Apply a slurry of silica sand, clay, glue, etc. on the bottom of this molded product and insert it into a firing furnace, then sinter it at a lower temperature than the original melting temperature of fritted waste glass or clinker to solidify it. Measure.
In the above, the plasticity of the plastic material enhances the moldability, the viscosity of the viscous material stabilizes the shape during firing, and if necessary, a melting material is added, and the translucency of the product due to its meltability Re-solidification technique of waste glass, characterized by maintaining material and utilizing the material of waste glass.

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